Gr 6 NST (English) 2020 Exemplars Question Paper hlayiso.com

Downloaded from hlayiso.com GAUTENG DEPARTMENT OF EDUCATION PROVINCIAL EXAMINATION NOVEMBER 2020 GRADE 6 NATURAL SCIENCES AND TECHNOLOGY TIME: 1½ hours MARKS: 60 12 pages DISTRICT NAME OF SCHOOL EMIS-NUMBER NAME AND SURNAME GENDER BOY GIRL SECTIONS A B C TOTAL Questions 1 2 3 4 5 6 7 Mark Allocation 10 5 5 5 5 21 9 60 Learner Marks P.T.O.

Downloaded from hlayiso.com NATURAL SCIENCES AND TECHNOLOGY 2 GRADE 6 INSTRUCTIONS 1. Answer ALL the questions on this paper. 2. Read the instructions of each question carefully before answering. 3. Write neatly and legibly. STRANDS NATURAL SCIENCES ENERGY AND CHANGE MATTER AND MATERIALS TECHNOLOGY SYSTEMS AND CONTROL The question paper consists of SECTION A, SECTION B AND SECTION C SECTION A: LOW SECTION B: MIDDLE SECTION C: HIGH ORDER ORDER QUESTIONS/ ORDER QUESTIONS/ QUESTIONS/COGNITIVE COGNITIVE LEVEL 1 COGNITIVE LEVEL 2, 3 & 4 LEVEL 5 & 6 Q1: Solution as special Q6: Dissolving, Electric Q7: Solids, liquids and mixtures, Dissolving, circuits, Electric conductors gases, Solution as special Mixtures and water and insulators, Systems to mixtures, Dissolving, resources, Processes to solve problems, Mains Mixtures and water purify water, Electric electricity resources, Processes to circuits, Electric conductors purify water, Electric circuits, and insulators, Systems to Electric conductors and solve problems, Mains insulators, Systems to solve electricity problems, Mains electricity Q2: Electric circuits, Electric conductors and insulators, Systems to solve problems, Mains electricity, Dissolving Q3: Dissolving Q4: Water resources, Processes to purify water, Mains electricity, Electric circuits Q5: Dissolving, Electric circuits, Electric conductors and insulators, Systems to solve problems, Mains electricity Total – 30 Total – 21 Total – 9 P.T.O.

Downloaded from hlayiso.com NATURAL SCIENCES AND TECHNOLOGY 3 GRADE 6 SECTION A QUESTION 1 Make a cross over the letter that shows the correct answer. 1.1 In an electric circuit, copper wire is normally used as a … (1) A conductor. B polar device. C converter. D source of energy. 1.2 A mixture of sand and water can be separated using the … method. (1) A hand sorting B dissolving C machine sorting D settling/decanting 1.3 A wetland is important because … (1) A it removes pollution from water. B no life is sustained in it. C we can swim in it. D it does not retain water. 1.4 An electric circuit can still work without a … connected to it. (1) A battery B conductor C switch D bulb 1.5 Water can be polluted by insoluble substances such as … (1) A insecticides. B fertilisers. C soap. D oil. 1.6 A solution is saturated when … (1) A a solute can dissolve easily. B a solute is not able to dissolve any more, leaving the undissolved substances at the bottom. C a solute dissolves too slowly. D a solute does not dissolve at all. P.T.O.

Downloaded from hlayiso.com NATURAL SCIENCES AND TECHNOLOGY 4 GRADE 6 1.7 If an electric cord is damaged, what do you do before using the appliance? (1) A Ignore the electric cord and B Throw it away. use the appliance. C Ask granny to look at it. D Make sure the cord is replaced by a qualified person/technician. 1.8 Which of these are non-renewable fossil fuels? (1) A Oil, natural gas, and coal B Wind, sun and coal C Coal, diesel and water D Natural gas, salt and sand 1.9 Eskom is not able to supply enough electricity because of … (1) A having no turbines to generate B a shortage of staff uniforms. electricity. C a shortage of insulation D illegal connections overloading materials. the system. 1.10 Every system requires the energy supply to work. Batteries/cells supply ... energy for a system to work. (1) A hydraulic B output C input D solar [10] P.T.O.

Downloaded from hlayiso.com NATURAL SCIENCES AND TECHNOLOGY 5 GRADE 6 QUESTION 2 Match the statements in COLUMN A with the correct word in COLUMN B. Write the correct LETTER in COLUMN C next to the number. NB: 2.6 is an example that has already been completed for you. COLUMN A COLUMN B COLUMN C 2.1 A process of straining a liquid to remove A Generator 2.1 – unwanted solids 2.2 Two or more cells joined together B Filtering 2.2 – 2.3 A machine that makes electricity when it is C System 2.3 – turned on 2.4 A disease that is carried and spread D Waterborne 2.4 – through water 2.5 When you can see through a solution and E Translucent 2.5 – there are no solid pieces visible 2.6 Substances that dissolve in a liquid F Battery 2.6 – G G Solute (5) P.T.O.

Downloaded from hlayiso.com NATURAL SCIENCES AND TECHNOLOGY 6 GRADE 6 QUESTION 3 Read the statements below about dissolving and answer the questions that follow. The Gr. 6 class at Amandla Primary School conducted an experiment to determine how the grain size of various sugars (10 grams each) affects the rate of dissolving three types of sugar in 440 ml warm water (temperature – 60°C). Their results were recorded in the table below: Beaker label Substance Size of grain Rate of dissolving (Time in Seconds) A Icing sugar Small 12 B Castor sugar Medium-sized 18 C Granulated sugar Large 30 3.1 Name the solvent used? (1) 3.2 Which variable was changed? (1) 3.3 Give one variable that was kept the same. (1) 3.4 Which type of sugar dissolved the fastest? (1) 3.5 Name one other substance that you could use in the place of sugar? (1) [5] P.T.O.

Downloaded from hlayiso.com NATURAL SCIENCES AND TECHNOLOGY 7 GRADE 6 QUESTION 4 Choose a word from the box below to complete each sentence. settling sludge turbine input process output 4.1 _______________ occurs when you leave a mixture of dirty water to stand for a while so that the heavier substances sink to the bottom. 4.2 The muddy substance found in water during the purification process is called _______________ . 4.3 Steam from boiling water turns a _______________ and generator to make electricity. 4.4 A system is made up of two or more parts that work together to do a specific job. When a component goes into a circuit and provides energy to the circuit, we say it is providing _______________ energy. As this energy is moved, transferred or changed to another form, it is called the _______________ energy. [5] QUESTION 5 Case Study: The Slime Dams of Ekurhuleni In the townships of Thema in Ekurhuleni, some people live near the old Vlakfontein mines. The people are grateful for the houses and have worked hard to buy them and take care of them. But, in Thema, many slime dams take in the wastewater from the mines. The acid in the water turns the pool orange, green and blue. Many of the neighbourhood children like to play on the banks of the dam. Some even swim in the dams. Vusi Thembekwayo is concerned. He visits the residents to warn them of the dangers of the dams. The acid water that drains out of the mines and into the dams can cause health problems and fatal diseases. 5.1 What is a slime dam? (1) P.T.O.

Downloaded from hlayiso.com NATURAL SCIENCES AND TECHNOLOGY 8 GRADE 6 5.2 Name TWO problems that can be caused by acids from the mines. (1 x 2) (2) 5.3 Why does the water in the pools turn orange, green and blue? (1) 5.4 Is the water from slime dams healthy to use? Give a reason to support your answer. (1) [5] TOTAL SECTION A: [30] P.T.O.

Downloaded from hlayiso.com NATURAL SCIENCES AND TECHNOLOGY 9 GRADE 6 SECTION B QUESTION 6 6.1 Explain the importance of a design brief when designing a system to solve a problem? (2) 6.2 Give the difference between a complete circuit and an incomplete circuit in a circuit. 6.2.1 Complete circuit: (1) 6.2.2 Incomplete circuit: (1) 6.3 What is the function of a switch in the circuit? (1) 6.4 What is the difference between suspension and solution waste? 6.4.1 Suspension: (1) 6.4.2 Solution: (1) 6.5 Explain how the temperature of a solvent affects the rate of dissolving. (2) P.T.O.

Downloaded from hlayiso.com NATURAL SCIENCES AND TECHNOLOGY 10 GRADE 6 6.6 Arrange the steps of how electricity is generated into the correct order. Steps not in the right order Steps in the correct order (Use letters only) A Electric current is transported by a system of Step 1: electrical transmission lines and substations to our homes. B The boiling water produces steam that turns a Step 2: turbine. C At the power station, coal is ground into a fine Step 3: powder. D The heat generated from burning coal is used to Step 4: boil water in a huge boiler. E The turbine is linked to a generator which uses a Step 5: coil to produce energy. F The ground coal then goes into a container Step 6: where it is burned. G Coal is transported from a coal mine to a power Step 7: station. (7) 6.7 Draw a circuit diagram of a closed circuit using the picture below. Include all the components in the picture. Rubric for circuit diagram Criteria Marks Battery 1 Two bulbs 1 Closed switch 2 Copper wire 1 Total 5 Draw your circuit diagram here. (5) TOTAL SECTION B: [21] P.T.O.

Downloaded from hlayiso.com NATURAL SCIENCES AND TECHNOLOGY 11 GRADE 6 SECTION C QUESTION 7 The Gr. 6 class at Amandla Primary School conducted an experiment to determine how the grain size of various sugars (10 grams each) affects the rate of dissolving three types of sugar in 440 ml of warm water (temperature – 60°C). Their results were recorded in the table below: Beaker label Substance Size of grain Rate of Dissolving (Time in seconds) A Icing sugar Small 12 B Castor sugar Medium-sized 18 C Granulated sugar Large 30 7.1 Draw a bar graph to indicate the results of the investigation above. TITLE:______________________ ____________________________________ _______________________________________________ (6) RUBRIC FOR GRAPH Criteria Marks x and y axis correctly labelled 2 Bars correctly plotted 3 Title of the graph 1 Total 6 P.T.O.

Downloaded from hlayiso.com 7.2 Give TWO reasons why electrical wires in electric circuits are covered in plastic. (2) 7.3 Would you say it is important to know which materials are conductors and which materials are insulators? Give a reason to support your answer. (1) TOTAL SECTION C: [9] TOTAL: 60 END